Automobile Engine MCQs

Question 1

The rigid suspension is beneficial when

Accepted Answer

Large changes in load make it necessary to have a large suspension stroke

Answer

It is desired to reduce the unsprung mass

Answer

It is desired to have more flexibility in design

Answer

It is desired to improve tyre to ground contact characteristics

Question 2

The valve clearance is necessary because it

Accepted Answer

Allow for lengthening of the valves owing to the heat of combustion

Answer

Reduces the resistance to sliding that occurs between the cams and tappets

Answer

Increases the speed at which the valves move up and down

Answer

Make the crankshaft turn smoothly

Question 3

The number of positive plates in a battery has on its plates

Accepted Answer

One less than the negative plates

Answer

One more than the negative plates

Answer

Two less than the negative plates

Answer

Two more than the negative plates

Question 4

In the air brake, air pressure is supplied by

Accepted Answer

A compressor

Answer

Engine manifold

Answer

The diaphragm valve

Answer

Vaccum gauge valve

Question 5

The reflector used in automobile head lamp is of

Accepted Answer

Parabolic shape

Answer

Spherical shape

Answer

Hemispherical shape

Answer

Hyperbolic shape

Question 6

The component of pressure spring type single plate clutch system which disengage from flywheel when pressing clutch pedal is

Accepted Answer

Clutch disc

Answer

Pressure plate

Answer

Clutch cover

Answer

Release bearing

Question 7

In a four-stroke cycle S. I. Engines the cam shaft runs

Accepted Answer

At half the speed of crank shaft

Answer

At the same speed as crank shaft

Answer

At twice the speed of crank shaft

Answer

At any speed irrespective of crank shaft speed

Question 8

The volumetric efficiency of a good designed engine may be

Accepted Answer

75 to 90%

Answer

30 to 40%

Answer

40 to 60%

Answer

60 to 70%

Question 9

In the power assisted brake system, movement of the brake pedal

Accepted Answer

Actuates the valve to admit atmospheric pressure to one side of the diaphragm

Answer

Increases the hydraulic pressure which actuates the control valve

Answer

Actuates the valve in the bellows through linkage

Answer

None of these